Supportive device



FIG. 1 is a front, left perspective view of a supportive device showing my new design;

FIG. 2 is a rear, right perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof. 

CLAIM The ornamental design for a supportive device, as shown and described. 